Bridge



" the carrier-arms, and C the shuttle.

UNITED STATES PATENT OFFICE.

SILAS HAMMOND STROVVBRIDGE, vOF CORTLAND, NEW YORK, ASSIGNOR 'TO LYDIAA. STROVBRIDGE, OF SAME PLACE.

POSITIVE SHUTTLE-MOTION FOR Looms.

SPECIFICATION forming part of Letters Patent No. 417,687, dated December17, 1889. Application filed Ielnuary 18, 1889. Serial No. 300,380. (Nomodel.)

`l'o all whom, it may concern:`

Be it known that I, SILAs HAMMOND STROW- BRIDGE, a citizen of the UnitedStates, residing at Cortland, in the county of Cortland and State of NewYork, have invented certain new and useful Improvements in PositiveShuttle-Motions for Looms, of which the following is a full, clear, andexact description.

My invention relates to positive shuttlemotions for looms forweavingwire-cloth, and the specific improvements relate to certainmechanism whereby the shuttle is carried from one side to the other, andin the details of the construction of the carrier-arms.

The object of the invention is to provide a simple and eifective meansfor automatically releasing one end of the shuttle at the same instantof time that the other end is engaged by the other arm. This object Iattain by the mechanism illustrated in the accompanying drawings, whichform a part of this specification, and in which Figure 1 represents afront elevation of a portion of a loom, showing my improvements appliedthereto, parts being shown in section. Fig. 2 represents a verticalsection of the carrier-arms, their attachments, and the shuttle.`

Similar letters refer to similarparts in both views.

The letter A indicates the beater-bars; B,

A sliding-bar D, having beveled ends D D2, is located underneath thelower beater-arm.

E E are vertical sliding bars, which act as stops against which pins FF, carried by the carrier-arms, strike to release the shuttle fromengagement with rst one andthen the other carrier-arm, as will be morefully hereinafter described.

G G( are vertical bars secured to and made a part of the sliding bar D.These bars extend above the carrier-arms in such a manner that ashuttle, as it moves across the width of the loom, will come in contactwith the said bars.

Located within each of the carrier-arms are spring-catches H andauxiliary spring-catches H', adapt-ed to engage the shuttle by means ofslots or holes K K', made in each end of the shuttle. These catches areprovided with lugs h h, having inclined sides, the purpose of which willpresently appear. The engaging ends of the catches operate in slots madein the carrier-arms after the usual manner. Also located within thecarrier-arms are sliding rodsII, each provided at one end with arectangular block i, and atthe other end with a wedge-shaped block fi',for the purpose of acting upon the inclined faces of the lugs h 71, 6oto force apart the spring-catches and thereby release the end of theshuttle when the sliding rod is forced backward. Ooiled springs m arelocated in the rear of the blocks t, the function of which will behereinafter eX- plained.

The pins F F project outward from the blocks c' through slot-s c in oneside of the carrier-arms and engage the vertical bars E E when they areforced upward by the action 7o of the beveled ends of the sliding bar D.

One of the principal features of the invention is the employment of theauxiliary or safety spring-catches, the object of which is to provideagainst accidents that frequently occur bythe breaking of or the gettingout of order of the spring-catches.

The slots K are made longer than the slots K, so that when catch Hengages the shoulder of slot K the catch II will have no en- 8o gagingeect with slot K but if catch H should break or become inoperative fromany cause the catch II would engage the shoulder of the slot K', andthus insure the safe and continuous operation of the shuttle;

It will be observed that the spring-catches, instead of being locatedwithin the carrierarms, may be attached to the outside thereof, theengaging ends working through the usual slots in the arms.

The means for actuating the carrier-arms is not shown; but-any one ofthe several Wellknown means may be employed-such as, for instance, thatshown in the patent granted to Benjamin Northrup, dated August 9, 1887,95 and numbered 367,838, with the exception that instead of mounting thecrank-arms on the actuating-shaft in the manner shown in the drawing ofthe said patent I mount the said arms one hundred and eighty degrees icoapart on said shaft.

The operation. of the device is as follows Motion being imparted to theactuating mechanism, as the shuttle moves backward from the center ot'the loom toward the right-hand side it engages the vertical bar G',sliding the bar D, the beveled end of which as it moves to one sideraises the vertical bar E', the op posite end allowing the bar E to dropbelow the carrier-arm, as shown in Fig. l of drawings. Then as thecarrier-arms move forward toward the center the pin F comes in contactwith the raised vertical bar E, holding back the sliding rod I, and asthe wedge -shaped block /z'f comes between the lugs 7L h. it forcesapart the spring-catches at the moment the opposite end of the shuttlecomes in contact with the spring-catch H in the other carrierarm, whichis not operated upon at this time by reason of the vertical bar E havingbeen dropped below the carrier-arm, the sliding bar D being only ofsufficient length to engage one of the vertical bars E E at a time. Theshuttle being thus released by the forcing apart of the spring-catchesin one of the carrier-arms is caught by the catch in the othercarrier-arm and carried to the other side of the loom, where it operatesupon the mechanism in the saine manner as above described, and theoperation is repeated. Vhen the sliding rods E E are not engaged by thepins t', the wedge-shaped blocks are held away from the lugs 7L L by thecoil-springs m.

Having thus fully described my invention, what I claim as new, anddesire 'to secure by Letters Patent, is-

l. The combination of a shuttle, a carrierarm, a spring-catch, a slidingrod carrying a wedge-shaped block adapted to actuate said catch torelease the shuttle, and provided with a projecting pin, a sliding barhaving an arm in the path of the shuttle and formed with a beveled end,and asliding bar adapted to be moved by said beveled end and be engagedby the projecting pin on said shuttlerod, substantially as specified.

2. rl`he combination of a shuttle, carrierarms, spring-catches, slidingrods provided with wedge-shaped blocks adapted to actnate said catchesto release the shuttle, and provided each with a projecting pin, asliding bar having arms in the path of the shuttle and formed withbeveled ends, and sliding bars adapted to be moved by said beveled endsinto the paths of the projecting pins on said wedge-shaped blocks,substantially as specified.

3. The combination, with a carrier-arm having its ends adapted for thereception of one end of the shuttle, of a pair of spring-catches securedto said arms .and provided with lugs h h on theiradjaeent sides, one ofsaid catches adapted to serve as a safety-catch in holding andpermitting the continued operation of the shuttle in the event of thebreakage of the other, a sliding rod carrying a wedgeshaped blockadapted to enter between the lugs on the catches to effect theseparation of the latter, and means for actuating the sliding rodcarrying the wedge-shaped bloclg, substantially as specified.

4. The combination of a shuttle, the carrier-arms B, the spring-catchesIl l-l, ,the sliding rods I l', adapted to actuate said catches torelease the shuttle, and provided each with a projecting pin F and F',respectively, sliding bar D, carrying arms G G and formed with beveledends, and sliding bars E E', substantially as specified.

SILAS HAMMOND S'lltO WBRIDGE.

Vitnesscs:

L. T. WHITE, H. W. BEARDSLEY.

